Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Check reference image dimensions for major social media platforms and placements.
This tool provides a quick reference table of commonly recommended image dimensions across major social platforms and placements (profile photos, cover images, post images). Platforms update their specs from time to time, so this static reference can occasionally drift out of date -- always double-check against the platform's own current official help documentation before a high-stakes upload.
Select a platform and placement from the list. The recommended dimensions appear instantly.
Choose a platform and placement from the drop-down. The page then displays the built-in recommended dimensions for that choice. You can optionally type your own image's width and height. When both are filled in, the tool compares them with the recommendation and tells you whether they match exactly, or that they do not match and the image may be cropped or scaled. The comparison is strict: only an identical width and height counts as a match, so 1200 by 631 is reported as not matching a 1200 by 630 spec.
This is a static list stored in the tool. It is not fetched live from any platform, so it can fall behind when a platform changes its layout or its guidance. Some platforms also crop the same image differently on mobile and desktop, or in the feed compared with the profile page. Check the platform's own help center for the current specification if a post is important.
Suppose you designed a hypothetical announcement graphic at 1200 by 675 pixels and want to use it as a link preview on Facebook. Select Facebook, shared post image. The recommended size is 1200 by 630. Entering 1200 and 675 shows a mismatch. The ratios differ slightly, so the platform may crop about 45 pixels of height, and if your text sits near the top or bottom edge it could be cut. You can resize the canvas to 1200 by 630 and keep important text away from the edges. A useful companion step is to compute the ratio of each size with the Image Aspect Ratio Calculator to see how far apart they are.
A mismatch is not an error. Many platforms accept a range of sizes and simply scale or crop them. The message here means your image is not the exact size in the reference list, so the platform may need to adjust it. If your ratio matches but your pixel size is larger, the result is often fine, since larger files with the right shape are typically scaled down. If the ratio differs, cropping is likely, and that is where you should check your composition. If your image is much smaller than the recommendation, it may look soft when scaled up.
They reflect commonly published guidance at the time this tool was built, but platforms change their specs periodically -- verify against the platform's own official documentation for anything important.
No. Selecting a platform and placement is enough to see the recommended dimensions. Entering your own width and height simply adds a match or mismatch message.
The comparison is exact, so any difference in width or height is reported as not matching. A one pixel difference will usually not be visible in practice.
They come from a fixed list built into the tool and may not reflect very recent platform changes. Confirm against the platform's official help documentation before an important upload.
Often that works if the shape matches, because the platform scales it down. Different platforms have their own file size limits and processing, so check their guidance.